Covered box



Y R E T T U E T. K

COVERED BOX 2 Sheets-Sheet l Filed July 17. 1950 May 4, 1954 Filed July 17, 1950 K. T. BUTTEIRY COVERED BOX 2 Sheets-Sheet 2 INVENTOR.

Patented May 4, 1,954

COVERED BOX Kenneth T. Buttery, Kalamazoo, Mich., assigner to Sutherland Paper Company, Kalamazoo,

Mich.

Application July 17, 195o, serialNo.174,302

4 Claims. l

This invention relates to improvements in a covered box.

The main objects of this invention are:

First, to provide a covered carton or box formed of container or boxboard stock which may be repeatedly opened and closed and is quite rigid when erected even when formed of quite light material.

Second, to provide a collapsible covered box or carton which may be formed of an integral blank and which collapses compactly and at the same time may be quickly set up.

Further objects relating to details and economies of the invention will appear from the description to follow. The invention is defined and pointed out in the claims.

A preferred embodiment of the invention is illustrated in the accompanying drawing, in which:

Fig. 1 is a perspective view of the carton or box of my invention with the cover closed.

Fig. 2 is a perspective view of the carton or box of my invention with the cover in partially open position.

Fig. 3 is an enlarged fragmentary perspective View with the locking flap on the front wall shown in engaged position by full lines and in disengaged position by dotted lines.

Fig. 4 is an enlarged fragmentary view in section on a line corresponding to line 4--4 of Fig. 2.

Fig. 5 is a plan view of the blank with one of the cover end Walls and one ofthe cover front wall flaps in folded position, their extended positions being indicated by dotted lines.

Fig. 6 is a plan view of the carton or box When collapsed.

The embodiment of my invention illustrated is formed of an integral blank of container board or cardboard-like stock and comprises a bottom I having a front wall 2 hingedly connected to its front edge as by the score line 3. A rear ,wall A is hingedly connected to the bottom at 5,V and end walls 6W5 hingedly connected to the bottom at l. Corner members S are hingedly connected to the ends of the end walls and to the adjacent front and rear walls as indicated at These corner naps are diagonally scored at IIl for folding. The segments II of the corner flaps are folded upon the adjacent front and rear walls and secured thereto desirably by adhesive indicated at I2.

The end Walls are provided with reinforcing extensions i3 foldably connected thereto at I4 and folded inward upon and adhesively secured to the inner sides of the end walls as indicated at i5. The front Wall 2 is provided with a locking 2 flap I6 hingedly connected thereto at I1 and provided with tabs I8 at its ends adapted to interlock with the front end edges of the end wall extensions I3 when folded over the erected corner members as best shown in Fig. 4.

The cover I9 is hingedly connected to the upper edge of the rear wall at 2li and is provided with a front cover wall 2I hingedly connected thereto at 22. This cover Wall has hinge aps 23 connected thereto at 24. The cover side walls 25 are hingedly connected to the cover at 26 and are provided with diagonal scores or folding lines 2l providing glue flaps 23 to which the iiaps 23 are secured as by adhesive as indicated at 29. With this arrangement the front cover wall and end cover Walls close over the corresponding walls of the box body when the cover is closed.

The hinging connections for thecornermembers B to the adjacent walls and their diagonal scores It are such as to provide a springing action which tends to apply rearward thrust on the rear wall i or, in other Words, tends to collapse or urge the rear wall rearwardly so that when the cover is closed the front wall of the cover is biased against the front body Wall and this acts to retain the cover in closed position. This is of very substantial advantage as the box or carton is de signed to be repeatedly opened in use and at the same time it is desirable that the cover be retained but that it be closed with a simple movement and no manipulation required to retain it in closed position.

I have illustrated and described my invention as embodied in a very practical form. I have not attempted to illustrate or describe other embodiments or adaptations as it is believed that this disclosure will enable those skilled in the art to embody or adapt my invention as may be de sired.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

l. A collapsible covered box formed of an integral blank cut and scored to provide a bottom, and front, rear and end body walls hingedly connected to the bottom, and corner members connecting the adjacent ends of the end walls to the front and rear walls, the corner members being diagonally scored and their segments adjacent the front and rear walls being folded upon and adhesively secured thereto and their other segments being disposed parallel to the front and rear Walls in the erected box, the end walls having reinforcing extensions on their top edges folded inwardly and adhesvely secured to the inner sides thereof, and a cover hingedly connected to the rear wall and provided with a front and end cover walls hingedly connected thereto, the front cover wall having corner flaps hingedly connected to its ends, the end cover walls having diagonal folding scores at their outer ends providing glue aps foldable upon the end cover walls and to which the said cover front wall flaps are adhesively secured, the cover front and end walls being closable over the corresponding front and end body walls, the hinging connections for the rear corner members being sprngable whereby they act to urge the rear body wall rearwardly and to urge the front cover wall against the front body wall then the cover is closed to retain the cover in closed position, said end Wall reinforcing extensions extending between said front body wall and said springable hinging connections and constituting means to transmit compressional stresses longitudinally of the end walls when said springable hinging connections are urging the front cover wall against the front body Wall.

2. A collapsible covered box formed of an integral blank cut and scored to provide a bottom, and front, rear and e-nd body Walls hingedly connected to the bottom, and corner members connecting the adjacent ends of the end walls to the front and rear walls, the corner members being diagonally scored and their segments adjacent the front and rear walls being folded upon and f adhesively secured thereto and their other segments being disposed parallel to the front and rear walls in the erected box, the end walls having reinforcing extensions on their top edges folded inwardly and adhesively secured to the inner sides thereof, the front wall having a flap on its upper edge foldable over said adjacent and other segments of the front corner members and having retaining tabs on its end edges engageable with the front edges of the said end Wall extensions between said front edges and the front wall when the body walls are in erected position, and a cover hingedly connected to the rear wall opposite said front wall and the flap on its upper edge and provided with a front and end cover walls hingedly connected thereto, the front cover wall having corner aps hingedly connected to its ends, the end cover walls having diagonal folding scores at their outer ends providing glue flaps foldable upon the e-nd Walls and to which the said L cover front wall aps are adhesively secured, the cover front and the end walls being closable over` the corresponding front and end body walls, said iiap of the front body wall in said integral blank being at one end of the blank and said front cover wall being at the opposite end thereof.

3. A collapsible covered box comprising a bottom, and iront, rear and end body walls hingedly connected to the bottom, and corner members connecting the adjacent ends of the end walls to the front and rear Walls, the corner members being diagonally scored and their segments adjacent the front and rear walls being folded upon and secured thereto and their other segments being disposed parallel to the front and rear walls in the erected box, the end walls having reinforcing extensions on their top edges folded inwardly upon their innersides, the front Wall having a flap foldable over said adjacent and other segments of the front corner members and er1n gageable with the front edges of the said end wall extensions between said front edges and the front body wall when the body Walls are in erected position, and a cover hingedly connected to the rear wall and provided with a front and end cover walls hingedly connected thereto, the front cover wall having corner aps hingedly connected to its ends, the end cover walls having hinged flaps foldable upon the end walls and secured to the said cover front wall flaps, the cover front and end walls being closable over the corresponding front and end body walls, the hinging connections for the rear corner members being springable whereby they act to urge the rear body wall rearwardly and to urge the front cover wall against the front body wall when the cover is closed to retain the cover in closed position, said end wall reinforcing extensions extending between said front body wall and said springable hinging connections and constituting means to transmit compressional stresses longitudinally of the end Walls when said springable hinging connections 1 are urging the front cover wall against the front body wall.

4. A collapsible covered box comprising a bottom, and front, rear and end body walls hingedly connected to the bottom, and corner` members connecting the adjacent ends of the end walls to the front and rear Walls, the corner members being diagonally scored and their segments adjacent the front and rear walls being folded upon and secured thereto and their other segments being disposed parallel to the front and rear walls in the erected box, the end walls having reinforcing extensions on their top edges folded inwardly upon their innersides, the front wall having a ap foldable over said adjacent and other segments of the front corner members and engageable with the front edges of the said end wall extensions between said front edges and the front wall when the body Walls are in erected position, and a cover hingedly connected to the rear wall opposite said front wall and the flap on its upper edge and provided with a front and end cover walls hingedly connected thereto, the front cover Wall having corner flaps hingedly connected to its ends, the cover front and end walls being closable over the corresponding front and end body walls, said end wall reinforcing extensions extending between the rear corner iiaps and the front body wall and constituting means to transmit compressional stresses longitudinally of the end walls when the front cover wall is under rearward stress against the front body wall.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,160,643 Burel May 30, 1939 2,210,443 Bergstein Aug. 6, 1940 2,214,813 Guyer Sept. 17, 1940 2,365,261 Frankenstein Dec. 19, 1944 FOREIGN PATENTS Number Country Date 35,516 Switzerland July A6, 1906 

